PaulBags:hamish225:jimbob79: Option to participate in the distribution of computing could be implemented.
During the time where the device is idle (i.e. during the night), it could participate in the folding@home project. The folding@home project is to help scientists to find a cure for Alzheimer's, Huntington's, Parkinson's, and many cancers.
More information here: http://folding.stanford.edu/
I have no idea how complicated this could be or whether it's even viable, but it is original and it has merit.
**Please vote for this one. **
I think this is the best idea yet!
If anyone lazy would like to go and vote for this, here is the link: http://www.geekzone.co.nz/forums.asp?forumid=155&topicid=119286&page_no=23#827689
If anyone is SUPER lazy and would like to vote for this, here is the link with BB Code: http://www.geekzone.co.nz/forums.asp?forumid=155&topicid=119286&page_no=23#827689